IN2014CN03641A - - Google Patents

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Publication number
IN2014CN03641A
IN2014CN03641A IN3641CHN2014A IN2014CN03641A IN 2014CN03641 A IN2014CN03641 A IN 2014CN03641A IN 3641CHN2014 A IN3641CHN2014 A IN 3641CHN2014A IN 2014CN03641 A IN2014CN03641 A IN 2014CN03641A
Authority
IN
India
Prior art keywords
impeller
blade
rotation direction
vicinity
shroud
Prior art date
Application number
Inventor
Kiyotaka HIRADATE
Yasushi Shinkawa
Satoshi Joko
Toshio Ito
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of IN2014CN03641A publication Critical patent/IN2014CN03641A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/38—Arrangement of components angled, e.g. sweep angle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

In order to make it possible to suppress the separation and slowdown of a flow in the vicinity of the front edge of a blade suction surface shroud of an impeller when the flow rate is reduced while reducing secondary flow loss within the impeller to thereby maintain the operating range of the impeller in a centrifugal fluid machine the shroud side is inclined further backward with respect to a rotation direction than the hub side at the back edge of an impeller blade when the impeller is viewed from a suction direction that is the upstream direction of a rotating shaft. Moreover in adjacent two impeller blades the shroud side of a blade located behind in the rotation direction of the impeller overlaps in the vicinity of the front edge of the blade with a blade located in front in the rotation direction.
IN3641CHN2014 2011-11-17 2012-11-09 IN2014CN03641A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011251213A JP5879103B2 (en) 2011-11-17 2011-11-17 Centrifugal fluid machine
PCT/JP2012/079121 WO2013073469A1 (en) 2011-11-17 2012-11-09 Centrifugal fluid machine

Publications (1)

Publication Number Publication Date
IN2014CN03641A true IN2014CN03641A (en) 2015-07-03

Family

ID=48429529

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3641CHN2014 IN2014CN03641A (en) 2011-11-17 2012-11-09

Country Status (6)

Country Link
US (1) US10125773B2 (en)
EP (1) EP2781760B1 (en)
JP (1) JP5879103B2 (en)
CN (1) CN104093988B (en)
IN (1) IN2014CN03641A (en)
WO (1) WO2013073469A1 (en)

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US9500084B2 (en) * 2013-02-25 2016-11-22 Pratt & Whitney Canada Corp. Impeller
PE20151584A1 (en) * 2013-03-28 2015-11-18 Weir Minerals Australia Ltd SUSPENSION PUMP DRIVE
EP2921711B1 (en) * 2014-03-21 2020-10-21 punker GmbH Radial fan wheel and blower unit
JP6411118B2 (en) * 2014-07-31 2018-10-24 株式会社日立製作所 Centrifugal impeller, single-shaft multistage centrifugal compressor using the same, and method of manufacturing centrifugal impeller
JP6627175B2 (en) 2015-03-30 2020-01-08 三菱重工コンプレッサ株式会社 Impeller and centrifugal compressor
CN107023862B (en) * 2016-02-01 2019-11-12 宁波方太厨具有限公司 A kind of top-sucking kitchen ventilator
CN107023509B (en) * 2016-02-01 2020-08-11 宁波方太厨具有限公司 Fan impeller and fan adopting same
CN109362233B (en) * 2016-07-27 2021-04-30 株式会社电装 Centrifugal blower
JP6971662B2 (en) * 2017-06-30 2021-11-24 株式会社川本製作所 Impeller
JP2020518761A (en) * 2017-07-03 2020-06-25 ▲広▼▲東▼威▲靈▼▲電▼机制造有限公司 Impeller, fan and motor
EP3696425B1 (en) * 2017-10-11 2023-05-03 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Impeller for centrifugal rotating machine, and centrifugal rotating machine
JP2020133534A (en) * 2019-02-21 2020-08-31 愛三工業株式会社 Centrifugal pump
US11365740B2 (en) * 2019-07-10 2022-06-21 Daikin Industries, Ltd. Centrifugal compressor for use with low global warming potential (GWP) refrigerant
CN116335959B (en) * 2023-05-26 2023-09-05 泰州康乔机电设备有限公司 Disc pump structure capable of improving flow velocity

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DE861142C (en) 1950-06-25 1952-12-29 Licentia Gmbh Impeller pressurized on both sides for centrifugal machines, especially for radial compressors
US3363832A (en) 1967-03-02 1968-01-16 Carrier Corp Fans
ATE13711T1 (en) * 1982-12-29 1985-06-15 Gebhardt Gmbh Wilhelm CENTRIFUGAL FAN WITH BACKWARDS CURVED, PROFILED BLADES.
EP0270723A1 (en) 1986-12-05 1988-06-15 Institut Cerac S.A. Impeller for a radial turbomachine
JP2701604B2 (en) 1991-08-02 1998-01-21 ダイキン工業株式会社 Air conditioner
JP2730396B2 (en) 1992-05-13 1998-03-25 ダイキン工業株式会社 Centrifugal fan impeller
DE69420745T2 (en) 1994-06-10 2000-04-27 Ebara Corp CENTRIFUGAL OR SEMI-AXIAL TURBO MACHINES
CN1079142C (en) * 1995-12-07 2002-02-13 株式会社荏原制作所 Turbine machine and manufacture thereof
KR100381466B1 (en) * 1995-12-07 2003-08-02 가부시키 가이샤 에바라 소고 겡큐쇼 Turbomachinery and its manufacturing method
US5639217A (en) * 1996-02-12 1997-06-17 Kawasaki Jukogyo Kabushiki Kaisha Splitter-type impeller
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US5730582A (en) * 1997-01-15 1998-03-24 Essex Turbine Ltd. Impeller for radial flow devices
CN1112519C (en) * 1998-01-14 2003-06-25 株式会社荏原制作所 Centrifugal turbomachinery
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GB2337795A (en) * 1998-05-27 1999-12-01 Ebara Corp An impeller with splitter blades
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Also Published As

Publication number Publication date
JP2013104417A (en) 2013-05-30
US20140314557A1 (en) 2014-10-23
EP2781760A4 (en) 2015-06-17
CN104093988B (en) 2016-12-28
JP5879103B2 (en) 2016-03-08
EP2781760B1 (en) 2017-01-11
EP2781760A1 (en) 2014-09-24
WO2013073469A1 (en) 2013-05-23
CN104093988A (en) 2014-10-08
US10125773B2 (en) 2018-11-13

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